466 Proceedings of Boyal Society of Edinburgh, [july 16, 
The subject was a Hindoo boy, who was exhibited at a meeting 
of the Pathological Society of London in February last. Although 
a short account of his case appeared in the British Medical Journal f 
still the report seemed to leave some points of considerable morpho- 
logical interest open to discussion. 
The parasite consisted of two segments separated from each other 
by a deep transverse groove. The upper and smaller one hung 
naturally downwards, and to the left side of the lower one, and 
comprised two upper extremities with a modified shoulder-girdle. 
The lower segment consisted of two lower extremities with a rudi- 
mentary pelvis, which possessed genitalia. The pedicle attaching 
the upper segment was slender, and evidently merely osseo-liga- 
mentous in nature ; while that attaching the lower one was much 
larger, and consisted apparently of two parts. Its right half was 
occupied by a strong very tense ligamentous band, while its left was 
more flaccid, and contained doubtless a peritoneal sac. 
The visceral and other systems of the parasite were fully discussed, 
and evidence was produced which conclusively showed that it 
possessed a more or less rudimentary renal organ, as well as some 
form of nerve-centre presiding specially over the genito-urinary 
system. The parasite was acardiac, and derived its blood supply 
from the autosite. 
It is well known that in such cases the organs of the autosite 
show tendencies towards doubling, f 
Cleland describes the case of a kitten with four additional legs 
projecting from the chest, in which he found two hearts and two 
pairs of lungs present.^ The existence of a second heart within 
the body of the autosite was therefore possible, although no trace of 
it could be made out. 
The parasite was devoid of motor power, but sensation was fairly 
well marked. 
The muscular development was so poor, and the subcutaneous 
tissue so scanty, that it was quite easy to make out the bones and 
their articulations, and in connection with these the chief points of 
interest in the case were to be found. 
* British Medical Journal, February 1888. 
+ Ahlfeld, Die MissMldungen des Menschen, 1880. 
+ Journal of Anatomy and Physiology, 1874, p. 257. 
